relnote: Inline all frames smaller than a pointer into QuicFrame.

net/quic/quic_packet_generator.cc

Index: net/quic/quic_packet_generator.cc
diff --git a/net/quic/quic_packet_generator.cc b/net/quic/quic_packet_generator.cc
index eed8ec7d84d62b14f59761158c65795494400146..ea50719f0a29a5edeb931baeeb5659c0da0c5ea5 100644
--- a/net/quic/quic_packet_generator.cc
+++ b/net/quic/quic_packet_generator.cc
@@ -57,7 +57,9 @@ QuicPacketGenerator::~QuicPacketGenerator() {
   for (QuicFrame& frame : queued_control_frames_) {
     switch (frame.type) {
       case PADDING_FRAME:
-        delete frame.padding_frame;
+      case MTU_DISCOVERY_FRAME:
+      case PING_FRAME:
+      case BLOCKED_FRAME:
         break;
       case STREAM_FRAME:
         delete frame.stream_frame;
@@ -65,9 +67,6 @@ QuicPacketGenerator::~QuicPacketGenerator() {
       case ACK_FRAME:
         delete frame.ack_frame;
         break;
-      case MTU_DISCOVERY_FRAME:
-        delete frame.mtu_discovery_frame;
-        break;
       case RST_STREAM_FRAME:
         delete frame.rst_stream_frame;
         break;
@@ -80,15 +79,9 @@ QuicPacketGenerator::~QuicPacketGenerator() {
       case WINDOW_UPDATE_FRAME:
         delete frame.window_update_frame;
         break;
-      case BLOCKED_FRAME:
-        delete frame.blocked_frame;
-        break;
       case STOP_WAITING_FRAME:
         delete frame.stop_waiting_frame;
         break;
-      case PING_FRAME:
-        delete frame.ping_frame;
-        break;
       case NUM_FRAME_TYPES:
         DCHECK(false) << "Cannot delete type: " << frame.type;
     }
@@ -250,7 +243,7 @@ void QuicPacketGenerator::GenerateMtuDiscoveryPacket(
   // The MTU discovery frame is allocated on the stack, since it is going to be
   // serialized within this function.
   QuicMtuDiscoveryFrame mtu_discovery_frame;
-  QuicFrame frame(&mtu_discovery_frame);
+  QuicFrame frame(mtu_discovery_frame);
 
   // Send the probe packet with the new length.
   SetMaxPacketLength(target_mtu, /*force=*/true);